tools: teach gyp to write an 'all deps' rule

Make GYP write a .deps file in the top-level directory that we can use
in the Makefile to get a proper dependency chain for the `node` target.
Preparatory work for getting rid of recursive make invocations.

PR-URL: https://github.com/nodejs/node/pull/17407


Reviewed-By: Richard Lau <riclau@uk.ibm.com>